5643329 has 2 divisors, whose sum is σ = 5643330. Its totient is φ = 5643328.

The previous prime is 5643317. The next prime is 5643331. The reversal of 5643329 is 9233465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5640625 + 2704 = 2375^2 + 52^2 .

It is a cyclic number.

It is not a de Polignac number, because 5643329 - 2²⁰ = 4594753 is a prime.

Together with 5643331, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 5643295 and 5643304.

It is not a weakly prime, because it can be changed into another prime (5643389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2821664 + 2821665.

It is an arithmetic number, because the mean of its divisors is an integer number (2821665).

Almost surely, 2^5643329 is an apocalyptic number.

It is an amenable number.

5643329 is a deficient number, since it is larger than the sum of its proper divisors (1).

5643329 is an equidigital number, since it uses as much as digits as its factorization.

5643329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 32.

The square root of 5643329 is about 2375.5691949510. The cubic root of 5643329 is about 178.0376240798.

The spelling of 5643329 in words is "five million, six hundred forty-three thousand, three hundred twenty-nine".